import axios from "axios";
import { MessageBox, Message } from "element-ui";
import store from "@/store";
import { getToken } from "@/utils/auth";

// create an axios instance
const service = axios.create({
  baseURL: process.env.VUE_APP_BASE_API, // url = base url + request url
  // withCredentials: true, // send cookies when cross-domain requests
  timeout: 5000 // request timeout
});

// request interceptor
service.interceptors.request.use(
  config => {
    // do something before request is sent

    if (store.getters.token) {
      // let each request carry token
      // ['Authorization'] is a custom headers key
      // please modify it according to the actual situation
      config.headers["Authorization"] = `Bearer ${getToken()}`;
    }
    return config;
  },
  error => {
    // do something with request error
    console.log(error); // for debug
    return Promise.reject(error);
  }
);

// response interceptor
service.interceptors.response.use(
  response => {
    const res = response.data;
    // if the custom code is not 20000, it is judged as an error.
    if (res.code !== 200) {
      Message({
        message: (res.data ? res.data.message : res.message) || "Error",
        type: "error",
        duration: 5 * 1000
      });

      if (res.code === 401) {
        MessageBox.confirm(
          "当前为非登录状态, 你可以取消并停留在当前页面, 或重新登录",
          "确认退出登录",
          {
            confirmButtonText: "重新登录",
            cancelButtonText: "取消",
            type: "warning"
          }
        ).then(() => {
          store.dispatch("user/resetToken").then(() => {
            location.reload();
          });
        });
      }
      return Promise.reject(new Error(res.message || "Error"));
    } else {
      return res;
    }
  },
  error => {
    if (error.response) {
      const errorResponse = error.response;
      // console.dir(error); // for debug
      Message({
        message: errorResponse.data
          ? errorResponse.data.message
          : error.message,
        type: "error",
        duration: 5 * 1000
      });
    }

    return Promise.reject(error);
  }
);

export default service;
